java - Calling static members from the super class of a generalizated attribute in Java

Question

I must admit that Java is a little messy when working with templates...

As the title explains, i'm trying to use an static member coded on the super class of some generalizated attribute. How can i do this?

For example:

class A {
    public static void someAction();
}

class B<T extends A>{ (...) }

¿how do i access the A's someAction() method in the class B?

score 5 · Accepted Answer

我如何someAction()从 B 类访问 A 的方法？

打电话

A.someAction()

这是一个静态方法，所以 B 的类型参数扩展 A 的事实没有任何影响。

如果someAction应该是通用的并且您想将 B 的<T>参数与 A 一起使用，则someAction使用其自己的类型参数声明：

public static <T> void someAction(.../* use T here maybe */) { ... }

然后B你可以做

A.<T>someAction(...)

使<T>before与 body 中的可见someAction相同。<T extends A>B

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